大肆鼓吹

to advocate vociferously

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

wantonly / without restraint (of enemy or malefactor) / unbridled

four (banker's anti-fraud numeral) / unrestrained / wanton / (literary) shop

old variant of 鼓[gu3]

drum / CL:通[tong4],面[mian4] / to drum / to strike / to rouse / to bulge / to swell

to agitate for / to enthusiastically promote

to blow / to play a wind instrument / to blast / to puff / to boast / to brag / to end in failure / to fall through